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  • Title: Synthesis of dibenzofurans via palladium-catalyzed phenol-directed C-H activation/C-O cyclization.
    Author: Xiao B, Gong TJ, Liu ZJ, Liu JH, Luo DF, Xu J, Liu L.
    Journal: J Am Chem Soc; 2011 Jun 22; 133(24):9250-3. PubMed ID: 21609019.
    Abstract:
    A practical, Pd(0)/Pd(II)-catalyzed reaction was developed for phenol-directed C-H activation/C-O cyclization using air as an oxidant. The turnover-limiting step of the process was found to be C-O reductive elimination instead of C-H activation. This reaction can tolerate a variety of functional groups and is complementary to the previous methods for the synthesis of substituted dibenzofurans.
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